ср, 2 сент. 2020 г. в 00:58, Jernej Skrabec <jernej.skrabec@xxxxxxxx>:
>
> Function sun8i_vi_layer_get_csc_mode() is supposed to return CSC mode
> but due to inproper return type (bool instead of u32) it returns just 0
> or 1. Colors are wrong for YVU formats because of that.
>
> Fixes: daab3d0e8e2b ("drm/sun4i: de2: csc_mode in de2 format struct is mostly redundant")
> Reported-by: Roman Stratiienko <r.stratiienko@xxxxxxxxx>
> Signed-off-by: Jernej Skrabec <jernej.skrabec@xxxxxxxx>
> ---
> drivers/gpu/drm/sun4i/sun8i_vi_layer.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/sun4i/sun8i_vi_layer.c b/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
> index 22c8c5375d0d..c0147af6a840 100644
> --- a/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
> +++ b/drivers/gpu/drm/sun4i/sun8i_vi_layer.c
> @@ -211,7 +211,7 @@ static int sun8i_vi_layer_update_coord(struct sun8i_mixer *mixer, int channel,
> return 0;
> }
>
> -static bool sun8i_vi_layer_get_csc_mode(const struct drm_format_info *format)
> +static u32 sun8i_vi_layer_get_csc_mode(const struct drm_format_info *format)
> {
> if (!format->is_yuv)
> return SUN8I_CSC_MODE_OFF;
> --
> 2.28.0
>
Hi Jernej,
Thank you for the fix.
I can confirm this patch fixes the issue with wrong colors.
Let me share my thoughts:
I've looked into csc code, and it seems to me reordering U, V offsets
should be a much simpler solution than applying
color transformation matrices.It should also simplify adding more
color encodings in the future.
Regards,
Roman
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